Mathgamain mac Cennetig

Mathgamain mac Cennetig (924-1 July 976) was King of Tuadmuma from 951 to 976, succeeding Cennetig mac Lorcain and preceding Brian Boru.

Biography
Mathgamain mac Cennetig was the son of Cennetig mac Lorcain and the brother of Brian Boru, and, on the death of his father in 951, Mathgamain mac Cennetig succeeded him as King of Tuadmuma. In 967, he became King of Caisil and defeated Ivar of Limerick at the Battle of Sulcoit, and he became King of Munster in 970 after deposing King Mael Muad mac Brain. He was captured in 976 by Donnuban mac Cathail, and he was handed over to his rival Mael Muad and executed.